1 /* 2 * vkbd.c 3 */ 4 5 /*- 6 * Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $Id: vkbd.c,v 1.20 2004/11/15 23:53:30 max Exp $ 31 * $FreeBSD$ 32 */ 33 34 #include "opt_compat.h" 35 #include "opt_kbd.h" 36 37 #include <sys/param.h> 38 #include <sys/conf.h> 39 #include <sys/fcntl.h> 40 #include <sys/kbio.h> 41 #include <sys/kernel.h> 42 #include <sys/limits.h> 43 #include <sys/lock.h> 44 #include <sys/malloc.h> 45 #include <sys/module.h> 46 #include <sys/mutex.h> 47 #include <sys/poll.h> 48 #include <sys/proc.h> 49 #include <sys/queue.h> 50 #include <sys/selinfo.h> 51 #include <sys/systm.h> 52 #include <sys/taskqueue.h> 53 #include <sys/uio.h> 54 #include <dev/kbd/kbdreg.h> 55 #include <dev/kbd/kbdtables.h> 56 #include <dev/vkbd/vkbd_var.h> 57 58 #define DEVICE_NAME "vkbdctl" 59 #define KEYBOARD_NAME "vkbd" 60 61 MALLOC_DECLARE(M_VKBD); 62 MALLOC_DEFINE(M_VKBD, KEYBOARD_NAME, "Virtual AT keyboard"); 63 64 /***************************************************************************** 65 ***************************************************************************** 66 ** Keyboard state 67 ***************************************************************************** 68 *****************************************************************************/ 69 70 /* 71 * XXX 72 * For now rely on Giant mutex to protect our data structures. 73 * Just like the rest of keyboard drivers and syscons(4) do. 74 */ 75 76 #if 0 /* not yet */ 77 #define VKBD_LOCK_DECL struct mtx ks_lock 78 #define VKBD_LOCK_INIT(s) mtx_init(&(s)->ks_lock, "vkbd_lock", NULL, MTX_DEF|MTX_RECURSE) 79 #define VKBD_LOCK_DESTROY(s) mtx_destroy(&(s)->ks_lock) 80 #define VKBD_LOCK(s) mtx_lock(&(s)->ks_lock) 81 #define VKBD_UNLOCK(s) mtx_unlock(&(s)->ks_lock) 82 #define VKBD_LOCK_ASSERT(s, w) mtx_assert(&(s)->ks_lock, w) 83 #define VKBD_SLEEP(s, f, d, t) \ 84 msleep(&(s)->f, &(s)->ks_lock, PCATCH | (PZERO + 1), d, t) 85 #else 86 #define VKBD_LOCK_DECL 87 #define VKBD_LOCK_INIT(s) 88 #define VKBD_LOCK_DESTROY(s) 89 #define VKBD_LOCK(s) 90 #define VKBD_UNLOCK(s) 91 #define VKBD_LOCK_ASSERT(s, w) 92 #define VKBD_SLEEP(s, f, d, t) tsleep(&(s)->f, PCATCH | (PZERO + 1), d, t) 93 #endif 94 95 #define VKBD_KEYBOARD(d) \ 96 kbd_get_keyboard(kbd_find_keyboard(KEYBOARD_NAME, dev2unit(d))) 97 98 /* vkbd queue */ 99 struct vkbd_queue 100 { 101 int q[VKBD_Q_SIZE]; /* queue */ 102 int head; /* index of the first code */ 103 int tail; /* index of the last code */ 104 int cc; /* number of codes in queue */ 105 }; 106 107 typedef struct vkbd_queue vkbd_queue_t; 108 109 /* vkbd state */ 110 struct vkbd_state 111 { 112 struct cdev *ks_dev; /* control device */ 113 114 struct selinfo ks_rsel; /* select(2) */ 115 struct selinfo ks_wsel; 116 117 vkbd_queue_t ks_inq; /* input key codes queue */ 118 struct task ks_task; /* interrupt task */ 119 120 int ks_flags; /* flags */ 121 #define OPEN (1 << 0) /* control device is open */ 122 #define COMPOSE (1 << 1) /* compose flag */ 123 #define STATUS (1 << 2) /* status has changed */ 124 #define TASK (1 << 3) /* interrupt task queued */ 125 #define READ (1 << 4) /* read pending */ 126 #define WRITE (1 << 5) /* write pending */ 127 128 int ks_mode; /* K_XLATE, K_RAW, K_CODE */ 129 int ks_polling; /* polling flag */ 130 int ks_state; /* shift/lock key state */ 131 int ks_accents; /* accent key index (> 0) */ 132 u_int ks_composed_char; /* composed char code */ 133 u_char ks_prefix; /* AT scan code prefix */ 134 135 VKBD_LOCK_DECL; 136 }; 137 138 typedef struct vkbd_state vkbd_state_t; 139 140 /***************************************************************************** 141 ***************************************************************************** 142 ** Character device 143 ***************************************************************************** 144 *****************************************************************************/ 145 146 static void vkbd_dev_clone(void *, struct ucred *, char *, int, 147 struct cdev **); 148 static d_open_t vkbd_dev_open; 149 static d_close_t vkbd_dev_close; 150 static d_read_t vkbd_dev_read; 151 static d_write_t vkbd_dev_write; 152 static d_ioctl_t vkbd_dev_ioctl; 153 static d_poll_t vkbd_dev_poll; 154 static void vkbd_dev_intr(void *, int); 155 static void vkbd_status_changed(vkbd_state_t *); 156 static int vkbd_data_ready(vkbd_state_t *); 157 static int vkbd_data_read(vkbd_state_t *, int); 158 159 static struct cdevsw vkbd_dev_cdevsw = { 160 .d_version = D_VERSION, 161 .d_flags = D_NEEDGIANT | D_NEEDMINOR, 162 .d_open = vkbd_dev_open, 163 .d_close = vkbd_dev_close, 164 .d_read = vkbd_dev_read, 165 .d_write = vkbd_dev_write, 166 .d_ioctl = vkbd_dev_ioctl, 167 .d_poll = vkbd_dev_poll, 168 .d_name = DEVICE_NAME, 169 }; 170 171 static struct clonedevs *vkbd_dev_clones = NULL; 172 173 /* Clone device */ 174 static void 175 vkbd_dev_clone(void *arg, struct ucred *cred, char *name, int namelen, 176 struct cdev **dev) 177 { 178 int unit; 179 180 if (*dev != NULL) 181 return; 182 183 if (strcmp(name, DEVICE_NAME) == 0) 184 unit = -1; 185 else if (dev_stdclone(name, NULL, DEVICE_NAME, &unit) != 1) 186 return; /* don't recognize the name */ 187 188 /* find any existing device, or allocate new unit number */ 189 if (clone_create(&vkbd_dev_clones, &vkbd_dev_cdevsw, &unit, dev, 0)) 190 *dev = make_dev_credf(MAKEDEV_REF, &vkbd_dev_cdevsw, unit, 191 cred, UID_ROOT, GID_WHEEL, 0600, DEVICE_NAME "%d", 192 unit); 193 } 194 195 /* Open device */ 196 static int 197 vkbd_dev_open(struct cdev *dev, int flag, int mode, struct thread *td) 198 { 199 int unit = dev2unit(dev), error; 200 keyboard_switch_t *sw = NULL; 201 keyboard_t *kbd = NULL; 202 vkbd_state_t *state = (vkbd_state_t *) dev->si_drv1; 203 204 /* XXX FIXME: dev->si_drv1 locking */ 205 if (state == NULL) { 206 if ((sw = kbd_get_switch(KEYBOARD_NAME)) == NULL) 207 return (ENXIO); 208 209 if ((error = (*sw->probe)(unit, NULL, 0)) != 0 || 210 (error = (*sw->init)(unit, &kbd, NULL, 0)) != 0) 211 return (error); 212 213 state = (vkbd_state_t *) kbd->kb_data; 214 215 if ((error = (*sw->enable)(kbd)) != 0) { 216 (*sw->term)(kbd); 217 return (error); 218 } 219 220 #ifdef KBD_INSTALL_CDEV 221 if ((error = kbd_attach(kbd)) != 0) { 222 (*sw->disable)(kbd); 223 (*sw->term)(kbd); 224 return (error); 225 } 226 #endif /* def KBD_INSTALL_CDEV */ 227 228 dev->si_drv1 = kbd->kb_data; 229 } 230 231 VKBD_LOCK(state); 232 233 if (state->ks_flags & OPEN) { 234 VKBD_UNLOCK(state); 235 return (EBUSY); 236 } 237 238 state->ks_flags |= OPEN; 239 state->ks_dev = dev; 240 241 VKBD_UNLOCK(state); 242 243 return (0); 244 } 245 246 /* Close device */ 247 static int 248 vkbd_dev_close(struct cdev *dev, int foo, int bar, struct thread *td) 249 { 250 keyboard_t *kbd = VKBD_KEYBOARD(dev); 251 vkbd_state_t *state = NULL; 252 253 if (kbd == NULL) 254 return (ENXIO); 255 256 if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1) 257 panic("%s: kbd->kb_data != dev->si_drv1\n", __func__); 258 259 state = (vkbd_state_t *) kbd->kb_data; 260 261 VKBD_LOCK(state); 262 263 /* wait for interrupt task */ 264 while (state->ks_flags & TASK) 265 VKBD_SLEEP(state, ks_task, "vkbdc", 0); 266 267 /* wakeup poll()ers */ 268 selwakeuppri(&state->ks_rsel, PZERO + 1); 269 selwakeuppri(&state->ks_wsel, PZERO + 1); 270 271 state->ks_flags &= ~OPEN; 272 state->ks_dev = NULL; 273 state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0; 274 275 VKBD_UNLOCK(state); 276 277 kbdd_disable(kbd); 278 #ifdef KBD_INSTALL_CDEV 279 kbd_detach(kbd); 280 #endif /* def KBD_INSTALL_CDEV */ 281 kbdd_term(kbd); 282 283 /* XXX FIXME: dev->si_drv1 locking */ 284 dev->si_drv1 = NULL; 285 286 return (0); 287 } 288 289 /* Read status */ 290 static int 291 vkbd_dev_read(struct cdev *dev, struct uio *uio, int flag) 292 { 293 keyboard_t *kbd = VKBD_KEYBOARD(dev); 294 vkbd_state_t *state = NULL; 295 vkbd_status_t status; 296 int error; 297 298 if (kbd == NULL) 299 return (ENXIO); 300 301 if (uio->uio_resid != sizeof(status)) 302 return (EINVAL); 303 304 if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1) 305 panic("%s: kbd->kb_data != dev->si_drv1\n", __func__); 306 307 state = (vkbd_state_t *) kbd->kb_data; 308 309 VKBD_LOCK(state); 310 311 if (state->ks_flags & READ) { 312 VKBD_UNLOCK(state); 313 return (EALREADY); 314 } 315 316 state->ks_flags |= READ; 317 again: 318 if (state->ks_flags & STATUS) { 319 state->ks_flags &= ~STATUS; 320 321 status.mode = state->ks_mode; 322 status.leds = KBD_LED_VAL(kbd); 323 status.lock = state->ks_state & LOCK_MASK; 324 status.delay = kbd->kb_delay1; 325 status.rate = kbd->kb_delay2; 326 bzero(status.reserved, sizeof(status.reserved)); 327 328 error = uiomove(&status, sizeof(status), uio); 329 } else { 330 if (flag & O_NONBLOCK) { 331 error = EWOULDBLOCK; 332 goto done; 333 } 334 335 error = VKBD_SLEEP(state, ks_flags, "vkbdr", 0); 336 if (error != 0) 337 goto done; 338 339 goto again; 340 } 341 done: 342 state->ks_flags &= ~READ; 343 344 VKBD_UNLOCK(state); 345 346 return (error); 347 } 348 349 /* Write scancodes */ 350 static int 351 vkbd_dev_write(struct cdev *dev, struct uio *uio, int flag) 352 { 353 keyboard_t *kbd = VKBD_KEYBOARD(dev); 354 vkbd_state_t *state = NULL; 355 vkbd_queue_t *q = NULL; 356 int error, avail, bytes; 357 358 if (kbd == NULL) 359 return (ENXIO); 360 361 if (uio->uio_resid <= 0) 362 return (EINVAL); 363 364 if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1) 365 panic("%s: kbd->kb_data != dev->si_drv1\n", __func__); 366 367 state = (vkbd_state_t *) kbd->kb_data; 368 369 VKBD_LOCK(state); 370 371 if (state->ks_flags & WRITE) { 372 VKBD_UNLOCK(state); 373 return (EALREADY); 374 } 375 376 state->ks_flags |= WRITE; 377 error = 0; 378 q = &state->ks_inq; 379 380 while (uio->uio_resid >= sizeof(q->q[0])) { 381 if (q->head == q->tail) { 382 if (q->cc == 0) 383 avail = sizeof(q->q)/sizeof(q->q[0]) - q->head; 384 else 385 avail = 0; /* queue must be full */ 386 } else if (q->head < q->tail) 387 avail = sizeof(q->q)/sizeof(q->q[0]) - q->tail; 388 else 389 avail = q->head - q->tail; 390 391 if (avail == 0) { 392 if (flag & O_NONBLOCK) { 393 error = EWOULDBLOCK; 394 break; 395 } 396 397 error = VKBD_SLEEP(state, ks_inq, "vkbdw", 0); 398 if (error != 0) 399 break; 400 } else { 401 bytes = avail * sizeof(q->q[0]); 402 if (bytes > uio->uio_resid) { 403 avail = uio->uio_resid / sizeof(q->q[0]); 404 bytes = avail * sizeof(q->q[0]); 405 } 406 407 error = uiomove((void *) &q->q[q->tail], bytes, uio); 408 if (error != 0) 409 break; 410 411 q->cc += avail; 412 q->tail += avail; 413 if (q->tail == sizeof(q->q)/sizeof(q->q[0])) 414 q->tail = 0; 415 416 /* queue interrupt task if needed */ 417 if (!(state->ks_flags & TASK) && 418 taskqueue_enqueue(taskqueue_swi_giant, &state->ks_task) == 0) 419 state->ks_flags |= TASK; 420 } 421 } 422 423 state->ks_flags &= ~WRITE; 424 425 VKBD_UNLOCK(state); 426 427 return (error); 428 } 429 430 /* Process ioctl */ 431 static int 432 vkbd_dev_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 433 { 434 keyboard_t *kbd = VKBD_KEYBOARD(dev); 435 436 return ((kbd == NULL)? ENXIO : kbdd_ioctl(kbd, cmd, data)); 437 } 438 439 /* Poll device */ 440 static int 441 vkbd_dev_poll(struct cdev *dev, int events, struct thread *td) 442 { 443 vkbd_state_t *state = (vkbd_state_t *) dev->si_drv1; 444 vkbd_queue_t *q = NULL; 445 int revents = 0; 446 447 if (state == NULL) 448 return (ENXIO); 449 450 VKBD_LOCK(state); 451 452 q = &state->ks_inq; 453 454 if (events & (POLLIN | POLLRDNORM)) { 455 if (state->ks_flags & STATUS) 456 revents |= events & (POLLIN | POLLRDNORM); 457 else 458 selrecord(td, &state->ks_rsel); 459 } 460 461 if (events & (POLLOUT | POLLWRNORM)) { 462 if (q->cc < sizeof(q->q)/sizeof(q->q[0])) 463 revents |= events & (POLLOUT | POLLWRNORM); 464 else 465 selrecord(td, &state->ks_wsel); 466 } 467 468 VKBD_UNLOCK(state); 469 470 return (revents); 471 } 472 473 /* Interrupt handler */ 474 void 475 vkbd_dev_intr(void *xkbd, int pending) 476 { 477 keyboard_t *kbd = (keyboard_t *) xkbd; 478 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 479 480 kbdd_intr(kbd, NULL); 481 482 VKBD_LOCK(state); 483 484 state->ks_flags &= ~TASK; 485 wakeup(&state->ks_task); 486 487 VKBD_UNLOCK(state); 488 } 489 490 /* Set status change flags */ 491 static void 492 vkbd_status_changed(vkbd_state_t *state) 493 { 494 VKBD_LOCK_ASSERT(state, MA_OWNED); 495 496 if (!(state->ks_flags & STATUS)) { 497 state->ks_flags |= STATUS; 498 selwakeuppri(&state->ks_rsel, PZERO + 1); 499 wakeup(&state->ks_flags); 500 } 501 } 502 503 /* Check if we have data in the input queue */ 504 static int 505 vkbd_data_ready(vkbd_state_t *state) 506 { 507 VKBD_LOCK_ASSERT(state, MA_OWNED); 508 509 return (state->ks_inq.cc > 0); 510 } 511 512 /* Read one code from the input queue */ 513 static int 514 vkbd_data_read(vkbd_state_t *state, int wait) 515 { 516 vkbd_queue_t *q = &state->ks_inq; 517 int c; 518 519 VKBD_LOCK_ASSERT(state, MA_OWNED); 520 521 if (q->cc == 0) 522 return (-1); 523 524 /* get first code from the queue */ 525 q->cc --; 526 c = q->q[q->head ++]; 527 if (q->head == sizeof(q->q)/sizeof(q->q[0])) 528 q->head = 0; 529 530 /* wakeup ks_inq writers/poll()ers */ 531 selwakeuppri(&state->ks_wsel, PZERO + 1); 532 wakeup(q); 533 534 return (c); 535 } 536 537 /**************************************************************************** 538 **************************************************************************** 539 ** Keyboard driver 540 **************************************************************************** 541 ****************************************************************************/ 542 543 static int vkbd_configure(int flags); 544 static kbd_probe_t vkbd_probe; 545 static kbd_init_t vkbd_init; 546 static kbd_term_t vkbd_term; 547 static kbd_intr_t vkbd_intr; 548 static kbd_test_if_t vkbd_test_if; 549 static kbd_enable_t vkbd_enable; 550 static kbd_disable_t vkbd_disable; 551 static kbd_read_t vkbd_read; 552 static kbd_check_t vkbd_check; 553 static kbd_read_char_t vkbd_read_char; 554 static kbd_check_char_t vkbd_check_char; 555 static kbd_ioctl_t vkbd_ioctl; 556 static kbd_lock_t vkbd_lock; 557 static void vkbd_clear_state_locked(vkbd_state_t *state); 558 static kbd_clear_state_t vkbd_clear_state; 559 static kbd_get_state_t vkbd_get_state; 560 static kbd_set_state_t vkbd_set_state; 561 static kbd_poll_mode_t vkbd_poll; 562 563 static keyboard_switch_t vkbdsw = { 564 .probe = vkbd_probe, 565 .init = vkbd_init, 566 .term = vkbd_term, 567 .intr = vkbd_intr, 568 .test_if = vkbd_test_if, 569 .enable = vkbd_enable, 570 .disable = vkbd_disable, 571 .read = vkbd_read, 572 .check = vkbd_check, 573 .read_char = vkbd_read_char, 574 .check_char = vkbd_check_char, 575 .ioctl = vkbd_ioctl, 576 .lock = vkbd_lock, 577 .clear_state = vkbd_clear_state, 578 .get_state = vkbd_get_state, 579 .set_state = vkbd_set_state, 580 .get_fkeystr = genkbd_get_fkeystr, 581 .poll = vkbd_poll, 582 .diag = genkbd_diag, 583 }; 584 585 static int typematic(int delay, int rate); 586 static int typematic_delay(int delay); 587 static int typematic_rate(int rate); 588 589 /* Return the number of found keyboards */ 590 static int 591 vkbd_configure(int flags) 592 { 593 return (1); 594 } 595 596 /* Detect a keyboard */ 597 static int 598 vkbd_probe(int unit, void *arg, int flags) 599 { 600 return (0); 601 } 602 603 /* Reset and initialize the keyboard (stolen from atkbd.c) */ 604 static int 605 vkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 606 { 607 keyboard_t *kbd = NULL; 608 vkbd_state_t *state = NULL; 609 keymap_t *keymap = NULL; 610 accentmap_t *accmap = NULL; 611 fkeytab_t *fkeymap = NULL; 612 int fkeymap_size, delay[2]; 613 int error, needfree; 614 615 if (*kbdp == NULL) { 616 *kbdp = kbd = malloc(sizeof(*kbd), M_VKBD, M_NOWAIT | M_ZERO); 617 state = malloc(sizeof(*state), M_VKBD, M_NOWAIT | M_ZERO); 618 keymap = malloc(sizeof(key_map), M_VKBD, M_NOWAIT); 619 accmap = malloc(sizeof(accent_map), M_VKBD, M_NOWAIT); 620 fkeymap = malloc(sizeof(fkey_tab), M_VKBD, M_NOWAIT); 621 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]); 622 needfree = 1; 623 if ((kbd == NULL) || (state == NULL) || (keymap == NULL) || 624 (accmap == NULL) || (fkeymap == NULL)) { 625 error = ENOMEM; 626 goto bad; 627 } 628 629 VKBD_LOCK_INIT(state); 630 state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0; 631 TASK_INIT(&state->ks_task, 0, vkbd_dev_intr, (void *) kbd); 632 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 633 return (0); 634 } else { 635 kbd = *kbdp; 636 state = (vkbd_state_t *) kbd->kb_data; 637 keymap = kbd->kb_keymap; 638 accmap = kbd->kb_accentmap; 639 fkeymap = kbd->kb_fkeytab; 640 fkeymap_size = kbd->kb_fkeytab_size; 641 needfree = 0; 642 } 643 644 if (!KBD_IS_PROBED(kbd)) { 645 kbd_init_struct(kbd, KEYBOARD_NAME, KB_OTHER, unit, flags, 0, 0); 646 bcopy(&key_map, keymap, sizeof(key_map)); 647 bcopy(&accent_map, accmap, sizeof(accent_map)); 648 bcopy(fkey_tab, fkeymap, 649 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 650 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 651 kbd->kb_data = (void *)state; 652 653 KBD_FOUND_DEVICE(kbd); 654 KBD_PROBE_DONE(kbd); 655 656 VKBD_LOCK(state); 657 vkbd_clear_state_locked(state); 658 state->ks_mode = K_XLATE; 659 /* FIXME: set the initial value for lock keys in ks_state */ 660 VKBD_UNLOCK(state); 661 } 662 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 663 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 664 665 vkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 666 delay[0] = kbd->kb_delay1; 667 delay[1] = kbd->kb_delay2; 668 vkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 669 670 KBD_INIT_DONE(kbd); 671 } 672 if (!KBD_IS_CONFIGURED(kbd)) { 673 if (kbd_register(kbd) < 0) { 674 error = ENXIO; 675 goto bad; 676 } 677 KBD_CONFIG_DONE(kbd); 678 } 679 680 return (0); 681 bad: 682 if (needfree) { 683 if (state != NULL) 684 free(state, M_VKBD); 685 if (keymap != NULL) 686 free(keymap, M_VKBD); 687 if (accmap != NULL) 688 free(accmap, M_VKBD); 689 if (fkeymap != NULL) 690 free(fkeymap, M_VKBD); 691 if (kbd != NULL) { 692 free(kbd, M_VKBD); 693 *kbdp = NULL; /* insure ref doesn't leak to caller */ 694 } 695 } 696 return (error); 697 } 698 699 /* Finish using this keyboard */ 700 static int 701 vkbd_term(keyboard_t *kbd) 702 { 703 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 704 705 kbd_unregister(kbd); 706 707 VKBD_LOCK_DESTROY(state); 708 bzero(state, sizeof(*state)); 709 free(state, M_VKBD); 710 711 free(kbd->kb_keymap, M_VKBD); 712 free(kbd->kb_accentmap, M_VKBD); 713 free(kbd->kb_fkeytab, M_VKBD); 714 free(kbd, M_VKBD); 715 716 return (0); 717 } 718 719 /* Keyboard interrupt routine */ 720 static int 721 vkbd_intr(keyboard_t *kbd, void *arg) 722 { 723 int c; 724 725 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 726 /* let the callback function to process the input */ 727 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 728 kbd->kb_callback.kc_arg); 729 } else { 730 /* read and discard the input; no one is waiting for input */ 731 do { 732 c = vkbd_read_char(kbd, FALSE); 733 } while (c != NOKEY); 734 } 735 736 return (0); 737 } 738 739 /* Test the interface to the device */ 740 static int 741 vkbd_test_if(keyboard_t *kbd) 742 { 743 return (0); 744 } 745 746 /* 747 * Enable the access to the device; until this function is called, 748 * the client cannot read from the keyboard. 749 */ 750 751 static int 752 vkbd_enable(keyboard_t *kbd) 753 { 754 KBD_ACTIVATE(kbd); 755 return (0); 756 } 757 758 /* Disallow the access to the device */ 759 static int 760 vkbd_disable(keyboard_t *kbd) 761 { 762 KBD_DEACTIVATE(kbd); 763 return (0); 764 } 765 766 /* Read one byte from the keyboard if it's allowed */ 767 static int 768 vkbd_read(keyboard_t *kbd, int wait) 769 { 770 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 771 int c; 772 773 VKBD_LOCK(state); 774 c = vkbd_data_read(state, wait); 775 VKBD_UNLOCK(state); 776 777 if (c != -1) 778 kbd->kb_count ++; 779 780 return (KBD_IS_ACTIVE(kbd)? c : -1); 781 } 782 783 /* Check if data is waiting */ 784 static int 785 vkbd_check(keyboard_t *kbd) 786 { 787 vkbd_state_t *state = NULL; 788 int ready; 789 790 if (!KBD_IS_ACTIVE(kbd)) 791 return (FALSE); 792 793 state = (vkbd_state_t *) kbd->kb_data; 794 795 VKBD_LOCK(state); 796 ready = vkbd_data_ready(state); 797 VKBD_UNLOCK(state); 798 799 return (ready); 800 } 801 802 /* Read char from the keyboard (stolen from atkbd.c) */ 803 static u_int 804 vkbd_read_char(keyboard_t *kbd, int wait) 805 { 806 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 807 u_int action; 808 int scancode, keycode; 809 810 VKBD_LOCK(state); 811 812 next_code: 813 814 /* do we have a composed char to return? */ 815 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 816 action = state->ks_composed_char; 817 state->ks_composed_char = 0; 818 if (action > UCHAR_MAX) { 819 VKBD_UNLOCK(state); 820 return (ERRKEY); 821 } 822 823 VKBD_UNLOCK(state); 824 return (action); 825 } 826 827 /* see if there is something in the keyboard port */ 828 scancode = vkbd_data_read(state, wait); 829 if (scancode == -1) { 830 VKBD_UNLOCK(state); 831 return (NOKEY); 832 } 833 /* XXX FIXME: check for -1 if wait == 1! */ 834 835 kbd->kb_count ++; 836 837 /* return the byte as is for the K_RAW mode */ 838 if (state->ks_mode == K_RAW) { 839 VKBD_UNLOCK(state); 840 return (scancode); 841 } 842 843 /* translate the scan code into a keycode */ 844 keycode = scancode & 0x7F; 845 switch (state->ks_prefix) { 846 case 0x00: /* normal scancode */ 847 switch(scancode) { 848 case 0xB8: /* left alt (compose key) released */ 849 if (state->ks_flags & COMPOSE) { 850 state->ks_flags &= ~COMPOSE; 851 if (state->ks_composed_char > UCHAR_MAX) 852 state->ks_composed_char = 0; 853 } 854 break; 855 case 0x38: /* left alt (compose key) pressed */ 856 if (!(state->ks_flags & COMPOSE)) { 857 state->ks_flags |= COMPOSE; 858 state->ks_composed_char = 0; 859 } 860 break; 861 case 0xE0: 862 case 0xE1: 863 state->ks_prefix = scancode; 864 goto next_code; 865 } 866 break; 867 case 0xE0: /* 0xE0 prefix */ 868 state->ks_prefix = 0; 869 switch (keycode) { 870 case 0x1C: /* right enter key */ 871 keycode = 0x59; 872 break; 873 case 0x1D: /* right ctrl key */ 874 keycode = 0x5A; 875 break; 876 case 0x35: /* keypad divide key */ 877 keycode = 0x5B; 878 break; 879 case 0x37: /* print scrn key */ 880 keycode = 0x5C; 881 break; 882 case 0x38: /* right alt key (alt gr) */ 883 keycode = 0x5D; 884 break; 885 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 886 keycode = 0x68; 887 break; 888 case 0x47: /* grey home key */ 889 keycode = 0x5E; 890 break; 891 case 0x48: /* grey up arrow key */ 892 keycode = 0x5F; 893 break; 894 case 0x49: /* grey page up key */ 895 keycode = 0x60; 896 break; 897 case 0x4B: /* grey left arrow key */ 898 keycode = 0x61; 899 break; 900 case 0x4D: /* grey right arrow key */ 901 keycode = 0x62; 902 break; 903 case 0x4F: /* grey end key */ 904 keycode = 0x63; 905 break; 906 case 0x50: /* grey down arrow key */ 907 keycode = 0x64; 908 break; 909 case 0x51: /* grey page down key */ 910 keycode = 0x65; 911 break; 912 case 0x52: /* grey insert key */ 913 keycode = 0x66; 914 break; 915 case 0x53: /* grey delete key */ 916 keycode = 0x67; 917 break; 918 /* the following 3 are only used on the MS "Natural" keyboard */ 919 case 0x5b: /* left Window key */ 920 keycode = 0x69; 921 break; 922 case 0x5c: /* right Window key */ 923 keycode = 0x6a; 924 break; 925 case 0x5d: /* menu key */ 926 keycode = 0x6b; 927 break; 928 case 0x5e: /* power key */ 929 keycode = 0x6d; 930 break; 931 case 0x5f: /* sleep key */ 932 keycode = 0x6e; 933 break; 934 case 0x63: /* wake key */ 935 keycode = 0x6f; 936 break; 937 default: /* ignore everything else */ 938 goto next_code; 939 } 940 break; 941 case 0xE1: /* 0xE1 prefix */ 942 /* 943 * The pause/break key on the 101 keyboard produces: 944 * E1-1D-45 E1-9D-C5 945 * Ctrl-pause/break produces: 946 * E0-46 E0-C6 (See above.) 947 */ 948 state->ks_prefix = 0; 949 if (keycode == 0x1D) 950 state->ks_prefix = 0x1D; 951 goto next_code; 952 /* NOT REACHED */ 953 case 0x1D: /* pause / break */ 954 state->ks_prefix = 0; 955 if (keycode != 0x45) 956 goto next_code; 957 keycode = 0x68; 958 break; 959 } 960 961 if (kbd->kb_type == KB_84) { 962 switch (keycode) { 963 case 0x37: /* *(numpad)/print screen */ 964 if (state->ks_flags & SHIFTS) 965 keycode = 0x5c; /* print screen */ 966 break; 967 case 0x45: /* num lock/pause */ 968 if (state->ks_flags & CTLS) 969 keycode = 0x68; /* pause */ 970 break; 971 case 0x46: /* scroll lock/break */ 972 if (state->ks_flags & CTLS) 973 keycode = 0x6c; /* break */ 974 break; 975 } 976 } else if (kbd->kb_type == KB_101) { 977 switch (keycode) { 978 case 0x5c: /* print screen */ 979 if (state->ks_flags & ALTS) 980 keycode = 0x54; /* sysrq */ 981 break; 982 case 0x68: /* pause/break */ 983 if (state->ks_flags & CTLS) 984 keycode = 0x6c; /* break */ 985 break; 986 } 987 } 988 989 /* return the key code in the K_CODE mode */ 990 if (state->ks_mode == K_CODE) { 991 VKBD_UNLOCK(state); 992 return (keycode | (scancode & 0x80)); 993 } 994 995 /* compose a character code */ 996 if (state->ks_flags & COMPOSE) { 997 switch (keycode | (scancode & 0x80)) { 998 /* key pressed, process it */ 999 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 1000 state->ks_composed_char *= 10; 1001 state->ks_composed_char += keycode - 0x40; 1002 if (state->ks_composed_char > UCHAR_MAX) { 1003 VKBD_UNLOCK(state); 1004 return (ERRKEY); 1005 } 1006 goto next_code; 1007 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 1008 state->ks_composed_char *= 10; 1009 state->ks_composed_char += keycode - 0x47; 1010 if (state->ks_composed_char > UCHAR_MAX) { 1011 VKBD_UNLOCK(state); 1012 return (ERRKEY); 1013 } 1014 goto next_code; 1015 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 1016 state->ks_composed_char *= 10; 1017 state->ks_composed_char += keycode - 0x4E; 1018 if (state->ks_composed_char > UCHAR_MAX) { 1019 VKBD_UNLOCK(state); 1020 return (ERRKEY); 1021 } 1022 goto next_code; 1023 case 0x52: /* keypad 0 */ 1024 state->ks_composed_char *= 10; 1025 if (state->ks_composed_char > UCHAR_MAX) { 1026 VKBD_UNLOCK(state); 1027 return (ERRKEY); 1028 } 1029 goto next_code; 1030 1031 /* key released, no interest here */ 1032 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 1033 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 1034 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 1035 case 0xD2: /* keypad 0 */ 1036 goto next_code; 1037 1038 case 0x38: /* left alt key */ 1039 break; 1040 1041 default: 1042 if (state->ks_composed_char > 0) { 1043 state->ks_flags &= ~COMPOSE; 1044 state->ks_composed_char = 0; 1045 VKBD_UNLOCK(state); 1046 return (ERRKEY); 1047 } 1048 break; 1049 } 1050 } 1051 1052 /* keycode to key action */ 1053 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 1054 &state->ks_state, &state->ks_accents); 1055 if (action == NOKEY) 1056 goto next_code; 1057 1058 VKBD_UNLOCK(state); 1059 1060 return (action); 1061 } 1062 1063 /* Check if char is waiting */ 1064 static int 1065 vkbd_check_char(keyboard_t *kbd) 1066 { 1067 vkbd_state_t *state = NULL; 1068 int ready; 1069 1070 if (!KBD_IS_ACTIVE(kbd)) 1071 return (FALSE); 1072 1073 state = (vkbd_state_t *) kbd->kb_data; 1074 1075 VKBD_LOCK(state); 1076 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 1077 ready = TRUE; 1078 else 1079 ready = vkbd_data_ready(state); 1080 VKBD_UNLOCK(state); 1081 1082 return (ready); 1083 } 1084 1085 /* Some useful control functions (stolen from atkbd.c) */ 1086 static int 1087 vkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 1088 { 1089 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 1090 int i; 1091 #ifdef COMPAT_FREEBSD6 1092 int ival; 1093 #endif 1094 1095 VKBD_LOCK(state); 1096 1097 switch (cmd) { 1098 case KDGKBMODE: /* get keyboard mode */ 1099 *(int *)arg = state->ks_mode; 1100 break; 1101 1102 #ifdef COMPAT_FREEBSD6 1103 case _IO('K', 7): 1104 ival = IOCPARM_IVAL(arg); 1105 arg = (caddr_t)&ival; 1106 /* FALLTHROUGH */ 1107 #endif 1108 case KDSKBMODE: /* set keyboard mode */ 1109 switch (*(int *)arg) { 1110 case K_XLATE: 1111 if (state->ks_mode != K_XLATE) { 1112 /* make lock key state and LED state match */ 1113 state->ks_state &= ~LOCK_MASK; 1114 state->ks_state |= KBD_LED_VAL(kbd); 1115 vkbd_status_changed(state); 1116 } 1117 /* FALLTHROUGH */ 1118 1119 case K_RAW: 1120 case K_CODE: 1121 if (state->ks_mode != *(int *)arg) { 1122 vkbd_clear_state_locked(state); 1123 state->ks_mode = *(int *)arg; 1124 vkbd_status_changed(state); 1125 } 1126 break; 1127 1128 default: 1129 VKBD_UNLOCK(state); 1130 return (EINVAL); 1131 } 1132 break; 1133 1134 case KDGETLED: /* get keyboard LED */ 1135 *(int *)arg = KBD_LED_VAL(kbd); 1136 break; 1137 1138 #ifdef COMPAT_FREEBSD6 1139 case _IO('K', 66): 1140 ival = IOCPARM_IVAL(arg); 1141 arg = (caddr_t)&ival; 1142 /* FALLTHROUGH */ 1143 #endif 1144 case KDSETLED: /* set keyboard LED */ 1145 /* NOTE: lock key state in ks_state won't be changed */ 1146 if (*(int *)arg & ~LOCK_MASK) { 1147 VKBD_UNLOCK(state); 1148 return (EINVAL); 1149 } 1150 1151 i = *(int *)arg; 1152 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 1153 if (state->ks_mode == K_XLATE && 1154 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 1155 if (i & ALKED) 1156 i |= CLKED; 1157 else 1158 i &= ~CLKED; 1159 } 1160 1161 KBD_LED_VAL(kbd) = *(int *)arg; 1162 vkbd_status_changed(state); 1163 break; 1164 1165 case KDGKBSTATE: /* get lock key state */ 1166 *(int *)arg = state->ks_state & LOCK_MASK; 1167 break; 1168 1169 #ifdef COMPAT_FREEBSD6 1170 case _IO('K', 20): 1171 ival = IOCPARM_IVAL(arg); 1172 arg = (caddr_t)&ival; 1173 /* FALLTHROUGH */ 1174 #endif 1175 case KDSKBSTATE: /* set lock key state */ 1176 if (*(int *)arg & ~LOCK_MASK) { 1177 VKBD_UNLOCK(state); 1178 return (EINVAL); 1179 } 1180 state->ks_state &= ~LOCK_MASK; 1181 state->ks_state |= *(int *)arg; 1182 vkbd_status_changed(state); 1183 VKBD_UNLOCK(state); 1184 /* set LEDs and quit */ 1185 return (vkbd_ioctl(kbd, KDSETLED, arg)); 1186 1187 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 1188 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 1189 kbd->kb_delay1 = typematic_delay(i); 1190 kbd->kb_delay2 = typematic_rate(i); 1191 vkbd_status_changed(state); 1192 break; 1193 1194 #ifdef COMPAT_FREEBSD6 1195 case _IO('K', 67): 1196 ival = IOCPARM_IVAL(arg); 1197 arg = (caddr_t)&ival; 1198 /* FALLTHROUGH */ 1199 #endif 1200 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 1201 kbd->kb_delay1 = typematic_delay(*(int *)arg); 1202 kbd->kb_delay2 = typematic_rate(*(int *)arg); 1203 vkbd_status_changed(state); 1204 break; 1205 1206 case PIO_KEYMAP: /* set keyboard translation table */ 1207 case OPIO_KEYMAP: /* set keyboard translation table (compat) */ 1208 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 1209 case PIO_DEADKEYMAP: /* set accent key translation table */ 1210 state->ks_accents = 0; 1211 /* FALLTHROUGH */ 1212 1213 default: 1214 VKBD_UNLOCK(state); 1215 return (genkbd_commonioctl(kbd, cmd, arg)); 1216 } 1217 1218 VKBD_UNLOCK(state); 1219 1220 return (0); 1221 } 1222 1223 /* Lock the access to the keyboard */ 1224 static int 1225 vkbd_lock(keyboard_t *kbd, int lock) 1226 { 1227 return (1); /* XXX */ 1228 } 1229 1230 /* Clear the internal state of the keyboard */ 1231 static void 1232 vkbd_clear_state_locked(vkbd_state_t *state) 1233 { 1234 VKBD_LOCK_ASSERT(state, MA_OWNED); 1235 1236 state->ks_flags &= ~COMPOSE; 1237 state->ks_polling = 0; 1238 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 1239 state->ks_accents = 0; 1240 state->ks_composed_char = 0; 1241 /* state->ks_prefix = 0; XXX */ 1242 1243 /* flush ks_inq and wakeup writers/poll()ers */ 1244 state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0; 1245 selwakeuppri(&state->ks_wsel, PZERO + 1); 1246 wakeup(&state->ks_inq); 1247 } 1248 1249 static void 1250 vkbd_clear_state(keyboard_t *kbd) 1251 { 1252 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 1253 1254 VKBD_LOCK(state); 1255 vkbd_clear_state_locked(state); 1256 VKBD_UNLOCK(state); 1257 } 1258 1259 /* Save the internal state */ 1260 static int 1261 vkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 1262 { 1263 if (len == 0) 1264 return (sizeof(vkbd_state_t)); 1265 if (len < sizeof(vkbd_state_t)) 1266 return (-1); 1267 bcopy(kbd->kb_data, buf, sizeof(vkbd_state_t)); /* XXX locking? */ 1268 return (0); 1269 } 1270 1271 /* Set the internal state */ 1272 static int 1273 vkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 1274 { 1275 if (len < sizeof(vkbd_state_t)) 1276 return (ENOMEM); 1277 bcopy(buf, kbd->kb_data, sizeof(vkbd_state_t)); /* XXX locking? */ 1278 return (0); 1279 } 1280 1281 /* Set polling */ 1282 static int 1283 vkbd_poll(keyboard_t *kbd, int on) 1284 { 1285 vkbd_state_t *state = NULL; 1286 1287 state = (vkbd_state_t *) kbd->kb_data; 1288 1289 VKBD_LOCK(state); 1290 1291 if (on) 1292 state->ks_polling ++; 1293 else 1294 state->ks_polling --; 1295 1296 VKBD_UNLOCK(state); 1297 1298 return (0); 1299 } 1300 1301 /* 1302 * Local functions 1303 */ 1304 1305 static int delays[] = { 250, 500, 750, 1000 }; 1306 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1307 68, 76, 84, 92, 100, 110, 118, 126, 1308 136, 152, 168, 184, 200, 220, 236, 252, 1309 272, 304, 336, 368, 400, 440, 472, 504 }; 1310 1311 static int 1312 typematic_delay(int i) 1313 { 1314 return (delays[(i >> 5) & 3]); 1315 } 1316 1317 static int 1318 typematic_rate(int i) 1319 { 1320 return (rates[i & 0x1f]); 1321 } 1322 1323 static int 1324 typematic(int delay, int rate) 1325 { 1326 int value; 1327 int i; 1328 1329 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; i --) { 1330 if (delay >= delays[i]) 1331 break; 1332 } 1333 value = i << 5; 1334 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; i --) { 1335 if (rate >= rates[i]) 1336 break; 1337 } 1338 value |= i; 1339 return (value); 1340 } 1341 1342 /***************************************************************************** 1343 ***************************************************************************** 1344 ** Module 1345 ***************************************************************************** 1346 *****************************************************************************/ 1347 1348 KEYBOARD_DRIVER(vkbd, vkbdsw, vkbd_configure); 1349 1350 static int 1351 vkbd_modevent(module_t mod, int type, void *data) 1352 { 1353 static eventhandler_tag tag; 1354 1355 switch (type) { 1356 case MOD_LOAD: 1357 clone_setup(&vkbd_dev_clones); 1358 tag = EVENTHANDLER_REGISTER(dev_clone, vkbd_dev_clone, 0, 1000); 1359 if (tag == NULL) { 1360 clone_cleanup(&vkbd_dev_clones); 1361 return (ENOMEM); 1362 } 1363 kbd_add_driver(&vkbd_kbd_driver); 1364 break; 1365 1366 case MOD_UNLOAD: 1367 kbd_delete_driver(&vkbd_kbd_driver); 1368 EVENTHANDLER_DEREGISTER(dev_clone, tag); 1369 clone_cleanup(&vkbd_dev_clones); 1370 break; 1371 1372 default: 1373 return (EOPNOTSUPP); 1374 } 1375 1376 return (0); 1377 } 1378 1379 DEV_MODULE(vkbd, vkbd_modevent, NULL); 1380 1381